Even then I think we do allow save states to be made in room , remember renpys autosave is really good in this aspect so you have to be sure.
Again if corruption is all you want it's farily easy to achieve all content in less than a minute and loyalty requires commitment and moving away.
It's the writer's vision as she wants you to actually put effort for girls that aren't drooling over you.
As for the Lana content I think your save might be bugged, I just replayed the entire thing even and it worked so might just be a 3 / 4 version older save hence having issues.